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水花生又叫革命草、空筒草、日本霸王草,其学名为空心莲子草,多年生,属苋科。该草原产巴西,我国引种于北京、江苏、四川等地,后逸为野生。水花生繁殖力奇强,落地生根或水面生根,难以清除,已成为一大公害。水花生在旱地水田均能生长,如水稻、小麦、蔬菜、果树等农田中间、田边地角、排灌沟渠以及公路两旁、铁路沿线、房前屋后、仓库周围、绿地草坪,无处不有。
Water peanut, also known as the revolutionary grass, empty tube grass, Japanese overlord grass, its scientific name is Hollyhock grass, perennial, is Amaranthus. The grassland produced in Brazil, China introduced in Beijing, Jiangsu, Sichuan and other places, after the escape for the wild. Peanut breeding feat strong, rooting or water root, difficult to remove, has become a major public hazard. Peanuts can grow in dryland paddy fields, such as rice fields, wheat, vegetables, fruit trees and other farmland, the Tanabe angle, irrigation and drainage ditches and roads along the railway, the front of the house, the warehouse around the green lawn, everywhere .